Home / 131,981.52-182,053.85-78,230.55

Finding the Fourth Proportional to 131,981.52, 182,053.85 and 78,230.55

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Solution

The fourth proportional to 131,981.52, 182,053.85 and 78,230.55 is: 107,910.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,981.52 : 182,053.85 = 78,230.55 : x
  2. Step 2: Convert to fraction form
    131,981.52/182,053.85 = 78,230.55/x
  3. Step 3: Cross multiply
    131,981.52x = 182,053.85 × 78,230.55
  4. Step 4: Simplify right side
    131,981.52x = 14,242,172,423.96
  5. Step 5: Solve for x
    x = 14,242,172,423.96/131,981.52
  6. Step 6: Final answer
    x = 107,910.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.